| abstract |
A compound of the general formula (I) n n n n n n n n n n in which R 1 , R 2 and R 3 are independently selected from C 1-4 -alkyl and C 1-4 -hydroxyalkyl; each R 4 is independently selected from hydrogen, C 1-4 -alkyl and C 1-4 -hydroxyalkyl; each R 5 is independently selected from hydrogen, C 1-4 -alkyl and C 1-4 -hydroxyalkyl; m is 2, 3, 4 or 5; n is 2, 3, 4 or 5; and o is an integer from 0 to 10. A preferred compound of the formula (I) is 2-(2-tert-butylaminoethoxy)ethylamine. Absorbents comprising a compound of the formula (I) have rapid absorption of carbon dioxide from fluid streams and are also suitable for processes for the simultaneous removal of H 2 S and CO 2 , where given H 2 S limits have to be observed but complete removal of CO 2 is not required. |